It helps to understand what this “Redux” thing is in the first place. What does it do? What problems does it help me solve? Why would I want to use it? Redux is a pattern and library for managing and updating application state, using events called “actions”. It serves as a centralized store for state that needs to be used across your entire application, with rules ensuring that the state can only be updated in a predictable fashion. Why Should I Use Redux? Redux helps you manage “global” state – state that is needed across many parts of your application. The patterns and tools provided by Redux make it easier to understand when, where, why, and how the state in your application is being updated, and how your application logic will behave when those changes occur. Redux guides you towards writing code that is predictable and testable, which helps give you confidence that your application will work as expected.